wipika sizing x ? = flat area
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Jersey Joe
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1st number AMP Size, number Flat Size, 3rd Aspect Ratio, Wind Range for 85 kg rider (knots) Wind Range for 75 kg rider (knots)
5.5 7.4 4.4 >25 >20
7.1 6.9 4.6 18-35 15-28
8.7 11.8 4.7 15-28 11-24
10.3 14.0 4.9 13-25 9-21
11.9 16.2 5.0 12-20 8-17
13.5 18.4 5.1 9-16 7-14
15.1 20.6 5.3 7-14 6-12
I just ordered my 11.9. Contact me lakesbay@optonline.net if you want my contact who has them. He is super fair and has great prices.
<font size=-1>[ This Message was edited by: Jersey Joe on 2003-02-05 19:01 ]</font>
5.5 7.4 4.4 >25 >20
7.1 6.9 4.6 18-35 15-28
8.7 11.8 4.7 15-28 11-24
10.3 14.0 4.9 13-25 9-21
11.9 16.2 5.0 12-20 8-17
13.5 18.4 5.1 9-16 7-14
15.1 20.6 5.3 7-14 6-12
I just ordered my 11.9. Contact me lakesbay@optonline.net if you want my contact who has them. He is super fair and has great prices.
<font size=-1>[ This Message was edited by: Jersey Joe on 2003-02-05 19:01 ]</font>
Wipika inform both sizes Projected and Flat area sizes.
Projected size is a calculated size, of the form of the kite filed with air when it is flying. "The size of the kite flying in the air"
"flat" area (as most other producers now inform) is the size of the kite on the floor.
Normaly the difference is made by dividide flat size by 1.36 for your information so that you can calculate your self.
Confused ?
Now most companys goes with "flat" sizes, but Wipika still I think goes with both sizes.
The resson for this was that it is important how much of the kite that in fact dos make power. Some kites will have half the kite as wingtips, and this "flat" area dos not make power. All projected area will make power, and was the idear of the best way to compaire kites.
Regards
John
Projected size is a calculated size, of the form of the kite filed with air when it is flying. "The size of the kite flying in the air"
"flat" area (as most other producers now inform) is the size of the kite on the floor.
Normaly the difference is made by dividide flat size by 1.36 for your information so that you can calculate your self.
Confused ?
Now most companys goes with "flat" sizes, but Wipika still I think goes with both sizes.
The resson for this was that it is important how much of the kite that in fact dos make power. Some kites will have half the kite as wingtips, and this "flat" area dos not make power. All projected area will make power, and was the idear of the best way to compaire kites.
Regards
John
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tommen
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if you divide flat area on a standard value, like 1.36, you don't really say anything about the projected area. it's just a different way of giving the size.
for the projected area to really have any value when you compare two kites, the projected area needs to be calculated using the shape of the kite to find how much of it actually generates pull. should be something like the shadow the kite would make on the ground when kite is straight over your head and the sun is straight over the kite.
still, using the standard value 1.36 gives often a measure pretty close to the actual projected area.
for the projected area to really have any value when you compare two kites, the projected area needs to be calculated using the shape of the kite to find how much of it actually generates pull. should be something like the shadow the kite would make on the ground when kite is straight over your head and the sun is straight over the kite.
still, using the standard value 1.36 gives often a measure pretty close to the actual projected area.
Thanks Jersey Joe. You put the flat area of the 7.1 AMP at 6.9 did you mean 9.6? I spotted this because this is the specific one I was interested in as I have an X2 10 and didn't want to double up.On 2003-02-05 19:00, Jersey Joe wrote:
1st number AMP Size, number Flat Size, 3rd Aspect Ratio, Wind Range for 85 kg rider (knots) Wind Range for 75 kg rider (knots)
5.5 7.4 4.4 >25 >20
7.1 6.9 4.6 18-35 15-28
8.7 11.8 4.7 15-28 11-24
10.3 14.0 4.9 13-25 9-21
11.9 16.2 5.0 12-20 8-17
13.5 18.4 5.1 9-16 7-14
15.1 20.6 5.3 7-14 6-12
<font size=-1>[ This Message was edited by: Jersey Joe on 2003-02-05 19:01 ]</font>
AF
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Peter_Frank
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Yes - the AMP 7.1 is 9.7m2, correct spotted !
And ALL brands use flat size now in 2003 - and some still prints both sizes, like Wipika.
The 1.36 rule is not projected area in geometrical sense - it is simply the size design rule used in the patent, and for the first kites produced - where this size could be compared with windsurfing sails.
This does not apply any more (the sail comparison factor should be around 2, today) - so flat area is preferred by all.
And ALL brands use flat size now in 2003 - and some still prints both sizes, like Wipika.
The 1.36 rule is not projected area in geometrical sense - it is simply the size design rule used in the patent, and for the first kites produced - where this size could be compared with windsurfing sails.
This does not apply any more (the sail comparison factor should be around 2, today) - so flat area is preferred by all.
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Jersey Joe
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mauidragon
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